package puzzle.akari.data;

public class BlockNumber {
	public static final int NON_BLOCK = -1;
	public static final int UNNUMBERED_BLOCK = 999;
	
	public static boolean isNonBlock(int n) {
		return n == NON_BLOCK;
	}
	
	public static boolean isBlock(int n) {
		return n >= 0;
	}

	public static boolean isNumber(int n) {
		return n >= 0 && n <= 4;
	}
}
